Carbon master transfer device



Nov.11s, 1969 R. B. SMITH 'E'T'AL- 3,478 8 CARBON MASTER TRANSFER DEVICE 3 Sheets-Sheet 1 Filed Sept. 14, 1964 BY ROBERTMTk/MMER" INVENTORS REY/Vol.0 6 SMITH Nov. 18, 1969 ,s ETAL CARBON MASTER TRANSFER DEVICE 3 Sheets-Sheet 2 Filed Sept. 14, 1964 IN VEN TORS RIVA/0L0 5. SMITH & ROBERTW- TRIMME/P.

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CARBON MASTER TRANSFER DEVICE Filed Sept. 14, 1964 3 Sheets-Sheet 3 21 f g i EI IIIlI i Q 7 llm "ll nllm e INVENTORS R'YNOLD B- sMlTH FIG 6 Rose/er w. TE/MMER United States Patent 1 CARBON MASTER TRANSFER DEVICE Reynold B. Smith and Robert W. Trimmer, York, Pa., as-

signors to York Label Corporation, York, Pa., a corporation of Pennsylvania Filed Sept. 14, 1964, Ser. No. 396,174

Int. Cl. B41f 13/56, 13/10 US. Cl. 101-227 13 Claims ABSTRACT OF THE DISCLOSURE A carbon master transfer device is provided wherein the intermittent length of feed stock is varied by means of a resilient pad mounted on a drive roll. An offset cam is located between a pair of feed rolls and the drive roll to cause continued stock movement during the period that the resilient pad is not in driving contact to avoid over impregnation by transfer liquid.

This invention relates to a carbon master transfer device and, more particularly, to a device capable of printing varying sizes of labels with a paper carbonized master on a variety of pressure sensitive as well as non-sensitive materials with but minor adjustments.

It is an object of the invention to provide a carbon master transfer device, in which the stock to be imprinted is fed through the device by frictional engagement with a resilient pad, which pad is simply attached to a driven roll. The length of the carbon master and, correspondingly, the length of the label imprinted thereby, is co-extensive with the length of the resilient pad, and can be varied merely by removing one pad and replacing it by a pad of differing length, the only limitation on the length being the circumferential distance of the driven roll. When the resilient pad moves off of the stock being imprinted, a period of dwell ensues until the pad moves again back into contact with the material to be imprinted. Means are provided for severing or scoring the stock during the period of dwell, said means taking the form of a knife edge attached to the driven roll upstream of the leading edge of the resilient pad, so that the stock is always severed or scored just prior to its being engaged by the pad.

It is a further object of the invention to provide in a device of the type just above mentioned, means to control the application of an alcohol base liquid to the carbonized master by means of a fluid feed foundation consisting of a well to contain the fluid, a pair of rollers, spring loaded and manually adjustable, immersed therein to meter the fluid to a carrying roll which, in turn, applies the fluid to the surface of the stock as the stock motivates all said rolls during its travel cycle.

A roll placed directly underneath the fluid carrying roll serves to create therewith a set of wringer rolls when the stock is threaded between the two. Movement of the stock by friction of the rubber pad aflixed to the drive roll draws the stock through the device and, in so doing, motivates the liquid feed or wringer rolls facilitating application of fluid to the surface of the stock.

When the fluid dampens the stock and the carbon comes in contact with the same, the image appearing on the carbon master, however placed there, will transfer to the surface of the stock and such process will repeat itself at the rate of one (1) per second until the carbon has been completely transferred from the master. Each master will provide approximately two hundred (200) images with proper fluid feed.

The invention consists of the novel constructions, arrangements and devices to be hereinafter described and claimed for carrying out the above-stated objects and such 3,478,681 Patented Nov. 18, 1969 other objects as will appear from the following description of a preferred embodiment of the invention described with reference to the accompanying drawings, in which:

FIG. 1 is a view in perspective of the new, improved carbon master transfer device with paper stock to be imprinted in operating position;

FIG. 2 is a view, similar to FIG. 1 but taken from a different angle, to a larger scale, with the paper feed stock removed to show further details;

FIG. 3 is a diagrammatic representation of the method for feeding liquid to the paper feed stock;

FIG. 4 is a diagrammatic representation of the means for adjusting the effective length of the paper feed stock between the liquid feed or wringer rolls and the driving roll;

FIGURE 5 is a portion of the view shown in FIGURE 2 but to a larger scale; and

FIGURE 6 is a cross-section on the line 6-6 of FIG URE 5.

Like numerals refer to like parts throughout the several views.

A frame member 10 includes two sidewall members 11 and 12, plus a plurality of supporting members 13 therebetween. A metal drive roll 14 is suitably journalled in sidewalls 11 and 12 by means of bearings 15. A second metal roll 16 is journalled in sidewalls 11 and 1.2 by Way of bearings 17, and lies in close proximity to drive roll 14. A slot 18 is provided in drive roll 14 for receiving a cut ting member 19 and a backup member 20. Any suitable means are provided for locking cutting member 19 in slot 18 and, as shown, takes the form of a lever 21 shown in its locked position in FIG. 1 and in its unlocked position in FIG. 2. Lever 21 has a threaded bolt 21a attached to one end thereof, which passes through a suitably threaded opening in drive roll 14, bearing against and locking backup member 20 when rotated to its closed position, as shown in FIG. 1. A carbon master 22 is also provided and is maintained in position by inserting it between cutting member 19 and the shoulder of roll 14 formed by slot 18, and then locking it in position by rotating lever 21 to its closed position. An electric motor 23 is provided and is suitably supported by frame 10 for driving roll 14. Suitable driving connections (not shown) are provided for this purpose, and are enclosed within a housing 24 mounted on sidewall 11. It will be appreciated that any suitable drive means may be provided for this purpose.

An arm member 25 is suitably attached to sidewall 11 for supporting a roll 26 of paper feed stock of either pressure sensitive or non-sensitive materials. A bolt 27 is attached to arm member 25 and supports a cylindrical wheel 28, on which the paper feed stock is supported for rotation.

Means must be provided for covering one side of paper feed stock 26 with a transfer liquid, such as alcohol, so that the carbon imprinting found on the carbon master 22 will be transferred thereto. This takes the form of a liquid fountain 29 suitably attached to frame member 10, and includes a well 30 therein for receiving the transfer liquid. A feed roll 31 is mounted in well 30 in contact with the liquid therein. Screws 32 are suitably journalled in liquid fountain 29, and bear against a pair of springs (not shown), which resiliently maintain roll 31 in position. A metering roll 33 is also journalled in fountain 29 for transfer of liquid from feed roll 31 to a pair of rolls 34 and 35. Roll 34 applies the fluid to the topside of the paper feed stock in its passage through the device. Roll 35 lies directly beneath roll 34, and the paper feed stock is threaded between the two rolls, which then function as wringer rolls. A cover member C is hingedly attached to frame 10 to cover the various rolls utilized in applying liquid to the paper feed stock. As shown in the drawings, the cover is in its open position and is merely rotated about its axis a to cover rolls 31, 33, 34 and 35. Rolls 31 and 33 may be made variably of rubber or any suitable synthetic composition. Roll 34 may be suitably made of brass and roll 35 of steel. The various roll materials are to be considered as descriptive rather than limiting.

Means are provided for varying the effective length of paper feed stock lying between rolls 34 and 35 and rolls 14 and 16, and takes the form of a cam 36 mounted on a shaft 37 suitably journalled in side wall members 11 and 12. A knob 38 is attached to shaft 37 for rotating cam 36 to any desired position. Cam 36 is so positioned in sidewall members 11 and 12 that it bears against paper feed stock 26 in its passage through the device.

An important feature of the invention is the provision of means for frictionally advancing paper feed stock 26 through the device. This takes the form of a resilient pad 39 suitably attached to drive roll 14 by any suitable method, preferably by way of an adhesive backing. The distance between rolls 14 and 16 is adjusted to be less than the thickness of pad 39 so that the pad 39 is compressed therebetween on rotation of drive roll 14.

To operate the device, paper feed stock 26 is threaded between rolls 34 and 35, as shown, thence over cam 36 and between rolls 14 and 16. Electric motor 23 is then started by any suitable switching means, thereby driving roll 14. Resilient pad 39 comes in contact with paper feed stock 26, and advances the same through the device. The advancing paper feed stock 26 serves to rotate rolls 34 and 35, which has the effect of rotating rolls 33 and 31 by way of contact with roll 34 to coat the uppermost side of the paper feed stock 26 with liquid from well 30, as is obvious from an inspection of FIG. 3.

It will be appreciated that paper fed stock 26 is advanced only so long as it is in contact with resilient pad 39, and a period of dwell ensues after pad 39 moves off of paper feed stock 26 during the rotation of roll 14. The rotation of roll 14 is in a counter-clockwise direction, as is seen in either FIG. 1 or FIG. 2. After the period of dwell and prior to the re-engagement of paper feed stock 26 by resilient pad 39, the feed stock is severed by cutting member 19. If it is only desired to score paper feed stock 26, particularly when of pressure sensitive type, then cutting member 19 is lowered within slot 18 to accomplish the same. It will be further appreciated that the length of the imprinted paper feed stock 26 may be varied merely by varying the length of resilient pad 39, the only limitation being that, obviously, it can be no longer than the circumferential distance around feed roll 14.

During the period of dwell, it will be appreciated that a greater amount of liquid will be supplied to paper feed stock 26 by roll 34, because of the length of time the paper feed stock remains in contact with the rolls. To insure that overly-impregnated portion does not coincide with the carbon master 22, cam means 36 are provided to vary the effective length of paper feed stock 26 lying between the two pairs of rolls. When a new master 22 and pad member 39 are attached to roll 14, the device is momentarily turned on to determine if the overlyimpregnated portion coincides with the master 22. If

it does, cam 36 is rotated in a trial and error method until such time as this does not occur, after which it is not touched during such time as the carbon master 22 and pad member 39 remain unchanged.

A further feature of the invention lies in the fact that master 22 is attached to roll 14 by one end, the leading end thereof. The master 22 is then, in effect, drawn between rolls 14 and 16 by rotation of drive roll 14, insuring that no wrinkling of the master can occur, and also permitting easier and faster placement of masters. Cover member C is provided so that the free end of master 22 does not impinge on any of the liquid feed roils as the master is rotated by roll 14.

We claim:

1. A carbon master transfer device comprising a frame member; a pair of rolls supported by said frame member and adapted to receive therebetween paper feed stock to be imprinted; means for driving one of said rolls; resilient pad means attached to said driven roll for frictionally advancing said paper feed stock through said device when said pad means is in contact with said stock, whereby the length of paper feed stock advanced during each rotation can be varied by varying the length of said pad means; means for attaching a master to said driven roll for rotation therewith, said master overlying said pad means; and means for applying transfer fluid to said paper feed stock.

2. A carbon master transfer device comprising a frame member; a pair of rolls supported by said frame member and adapted to receive therebetween paper feed stock to be imprinted; means for driving one of said rolls; resilient pad means attached to said driven roll for frictlonally advancing said paper feed stock through said device when said pad means is in contact with said stock, whereby the length of paper feed stock advanced during each rotation can be varied by varying the length of said pad means; means for attaching one end only of a carbon master to said driven roll for rotation therewith, said master overlying said pad means; means for applying transfer fluid to said paper feed stock; and knife means for severing said feed stock.

3. A carbon master transfer device comprising a frame member; a pair of rolls supported by said frame member and adapted to receive therebetween paper feed stock to be imprinted; means for driving one of said rolls; resilient pad means attached to said driven roll for frictionally advancing said paper feed stock through said device when said pad means is incontact with said stock, whereby the length of paper feed stock advanced during each rotation can be varied by varying the length of said pad means; means for attaching a carbon master to said driven roll for rotation therewith, said master overlying said pad means; means for applying transfer fluid to said paper feed stock; and knife means operative to sever or score said paper feed stock when said pad means is out of contact with said stock.

4. A carbon master transfer device comprising a frame member; a pair of rolls supported by said frame member and adapted to receive therebetween paper feed stock to be imprinted; means for driving one of said rolls; means attached to said driven rolls for advancing said paper feed stock through said device, means for attaching one end of a carbon master to said driven roll for rotation therewith; means for applying transfer fluid to said paper feed stock including a second pair of rolls receiving therebetween said paper feed stock and means for supplying transfer fluid to one of said second pair of rolls for application to said paper feed stock; and means for varying the length of feed stock lying between said two pairs of rolls.

5. The device as set out in claim 4 further including knife means and means for adjusting said knife means to either sever or score said paper feed stock.

6. A carbon master transfer device comprising a frame member a pair of rolls supported by said frame member and adapted to receive therebetween paper feed stock to be imprinted means for driving one of said rolls; pad means attached to said driven roll for frictionally advancing said paper feed stock through said device when said pad means is in contact with said stock, a dwell period occurring when said pad means moves off said stock; means for attaching a master to said driven roll for rotation therewith, said master overlying said pad means; means for applying transfer fluid to said paper feed stock including a second pair of rolls for receiving therebetween said paper feed stock and means for supplying transfer fluid to one of said second pair of rolls for application to said paper feed stock; and means for varying the length of paper feed stock lying between said two pairs of rolls.

7. The device as set out in claim 6 further including knife means operative against said paper feed stock during said dwell'period.

8. A carbon master transfer device comprising a frame member; a pair of rolls supported by said frame member and adapted to receive therebetween paper feed stock to be imprinted; means for driving one of said rolls; means attached to said driven roll for advancing said paper feed stock through said device; knife means attached to said driven roll for severing said paper feed stock after imprinting; means for attaching a carbon master to said driven roll for rotation therewith; means for applying transfer fluid to said paper feed stock including a second pair of rolls receiving therebetween said paper feed stock and means for applying transfer fluid to one of said second pair of rolls for application to said paper feed stock; and a cam bearing on said paper feed stock at a point between said two paris of rolls for varying the length of feed stock lying between said two pairs of rolls.

9. The device as set out in claim 8, further including means for adjusting said knife means to score said paper feed stock.

10. A carbon master transfer device comprising a frame member; a pair of rolls supported by said frame member and adapted to receive therebetween paper feed stock to be imprinted; means for driving one of said rolls; pad means attached to said driven roll for frictionally advancing said paper feed stock through said device when said pad means is in contact with said stock, whereby the length of paper feed stock advanced during each rotation can be varied by varying the length of said pad means; knife means attached to said driven roll upstream of said pad means for severing said paper feed stock during a period of dwell of said paper feed stock; means for attaching a carbon master to said driven roll for rotation therewith, said master overlying said pad means; means for applying transfer fluid to said paper feed stock including a second pair of rolls receiving therebetween said paper feed stock and means for supplying transfer fluid to one of said second pair of rolls for application to said paper feed stock; and a cam bearing on said paper feed stock at a point between said two pairs of rolls for varying the length of feed stock lying between 'said two pairs of rolls.

11. The device of claim 10 wherein said pad means is composed of a resilient material and said attaching means secures one end only of said master to said driven roll.

12. The device of claim 11 further including means for adjusting said knife means to score said paper feed stock.

13. A carbon master transfer device comprising a frame member; a pair of rolls journalled on said frame member and adapted to receive therebetween paper feed stock to be imprinted; means for driving one of said rolls; resilient pad means attached to said driven roll for advancing said paper feed stock through said device when said pad means is in contact with said stock, whereby the length of paper" feed stock advanced during each rotation can be varied by varying the length of said pad means; knife means attached to driven roll, means for adjusting said knife means to sever or score said paper feed stock; means foryattaching the leading edge of a carbon master to said driven roll for rotation therewith, said master overlying said resilient pad means; means for applying transfer fluid to said paper feed stock comprising afluid fountain, a fluid feed roll immersed in said fountain, a second pair of rolls receiving therebetween said paper feed stock, a transfer roll journalled on said frame in contact with said fluid feed roll and one of said second pair of rolls for transferring fluid from said fluid feed roll to said one roll and thence to said paper feed stock, rotation of said fluid feed and transfer rolls being caused by the rotation of said second pair of rolls as said advancing paper feed stock passes therebetween; and a cam bearing on said paper feed stock at a point between said two pairs of rolls for varying the length of feed stock lying between said two pairs of rolls.

References Cited UNITED STATES PATENTS 1,763.679 6/1930 Stickney 101-224 2,997,949 8/1961 Ritzerfeld et a1. 101-1325 3,068,788 12/1961 Bell et a1. 101-226 3,077,831 2/ 1963 Ritzerfeld et a1. 101-1325 616,745 12/1898 Taeuber 101-132 816,945 4/1906 Smith et a1. 101-227 2,120,247 6/1938 Funk et al. 101-118 2,387,740 10/1945 Bradt 101-132 2,542,229 2/ 1951 Bojanower et al. 101-182 2,789,497 4/1957 Marshall 101-228 3,099,212 7/1963 Sohr 101-226 3,100,441 8/ 1963 Akiyama 101-141 ROBERT E. PULFREY, Primary Examiner E. H. EICKHOLT, Assistant Examiner US. Cl. X.R. 

